Qhov sib txawv ntawm cov ntxiv - kev kho thiab hws khov kho {{
Kua Silicone Roj Hmab (LSR) yog ntau cov khoom siv nyob rau hauv ntau kev lag luam vim nws zoo heev thermal ruaj khov, yooj yim heev, thiab tshuaj lom neeg kuj. Muaj ob hom LSR: ntxiv - Khi} Khiual and condensation- txoj kev kho. Thaum ob qho tib si yog silicones, lawv lub tshuab kho, cov khoom, thiab cov ntawv thov sib txawv. Nkag siab cov kev sib txawv no yog qhov tseem ceeb rau kev xaiv cov khoom siv tau rau ib daim ntawv thov tshwj xeeb.
1. Kev Kho Mechanism
Txuas ntxiv -}} kho lsr:
Cov hom no kho tau los ntawm ib qho platinum - catalyzed ntxiv cov kev pom zoo li silicone polymers thiab silicon} hydrogen (si} h) ballinkers. Cov txheej txheem xav tau tshav kub (feem ntau 100℃-150 degree) thiab tsim tawmtsis muaj los ntawm - cov khoomCov. Cov tshuaj tiv thaiv tau ua tau zoo thiab meej meej, ua rau nws zoo tagnrho rau high-}} heev.
Condensation - Khis Nrhiav LSR:
Cov hom no kho tau rau hauv chav tsev kub (RTV) los ntawm cov tshuaj tiv thaiv hws, feem ntau nrog cov dej noo hauv huab cua. Cov tshuaj tiv thaiv tshaj tawm los ntawm - cov khoom xws lidej cawv, acetic acid, los yog ketonesCov. Nws tsis tas yuav muaj cua sov, ua rau nws haum rau kev siv rau qhov twg cov cua sov tsis sib xws.
2. Cov Khoom Tseem Ceeb Sib Piv
| Ntiag tug | Txuas ntxiv -}} kho lsr | Condensation - Khis Nrhiav LSR |
|---|---|---|
| Kev kho qhov kub | Kom kub siab | Chav Chav Kub |
| Los ntawm - cov khoom | Tsis muaj | Dej cawv, acetic acid, thiab lwm yam. |
| Kho Ceev | Ceev (vib nas this rau feeb) | Qeeb (teev rau hnub) |
| Kev shrinkage | Qi | Mob siab rau siab |
| Substrate Adhesion | Pluag (yuav tsum priming) | Zoo heev (tus kheej - adhesive) |
| Tshuaj lom neeg purity | High (Kev Kho Mob / Khoom Noj Khoom Haus) | Qis dua (los ntawm -} cov khoom lag luam) |
| Thaum Tshav Kub Kub Ua | Zoo heev (txog 200℃+) | Zoo (txog 150 Qib -180 Qib) |
| Qhov tob ntawm kev kho | Txwv tsis pub | Txwv (kho nqaij npua) |
3. Kev thov
Txuas ntxiv -}} kho lsr:
Cov Khoom Siv Kho Mob: Tua cov pistons, cog, qhov ncauj qhov ntswg ua pa.
Automotive: Ntsaws, gaskets, ignition cables.
Cov Neeg Siv Khoom: Cov khoom me me, chav ua noj ua noj ua haus.
Khoom siv hluav taws xob: Encapsulants, keypads.
Condensation - Khis Nrhiav LSR:
Hluav Taws Xob Cov Pa: Tiv thaiv cov pcbs thiab sensors.
Siv Kev Siv: Qhov rai thiab sib koom ua ke.
Pwm tau ua: Intotyping thiab kos duab pwm.
Kho Vaj Tse: Adhesives thiab lasalants rau DIY siv.
4. Qhov zoo thiab txwv
Txuas ntxiv -}} kho lsr:
Qhov Zoo: Muaj kev coj dawb huv, kho kom ceev, zoo heev thermal / tshuaj tua tsis tau.
Kev txwv: Nkag siab rau catalyst inhabitors (leej faj, amines), yuav tsum muaj cua sov.
Condensation - Khis Nrhiav LSR:
Qhov Zoo: Room-temperature curing, strong adhesion, cost-effective.
Kev txwv: Slower caping, los ntawm - Cov khoom tso tawm, qis dua kub tsis kam.
5. Khoom siv tuav thiab ua
Txuas ntxiv -}} kho lsr:
Yuav tsum muaj cov meterical metering thiab sib xyaw (feem ntau 1: 1 piv) thiab yog ua tiav siv cov kua muag ua kua muag (lim). Yuav tsum tsis txhob muaj kev paug los tiv thaiv kev txwv catalyst.
Condensation - Khis Nrhiav LSR:
Feem ntau muab rau hauv ib qho -} {{{{{{{part (manually mixed). Nws yog thov ntawm dispensing phom, txhuam, lossis txau thiab kho kom raug rau qhov chaw noo noo.
Tag
Kev xaiv ntawm kev ntxiv - kev kho thiab hws {{1} {kho lsr nyob ntawm daim ntawv thov yuav tsum tau ua. Ntxiv rau - Kho kom zoo rau LSR yog qhov siab dua rau qhov siab {{- Kev thov kub thiab kev ua yeeb yam yog qhov tseem ceeb. Condensation - Kev Kho LSR raug xaiv rau nws yooj yim, thiab nws zoo tagnrho rau kev khi, ua yeeb yam, thiab kho kom haum. Nkag siab cov kev sib txawv no ua kom pom qhov sib txawv ntawm kev xaiv cov lus xaiv rau kev ua tiav kev ua tau zoo thiab ua haujlwm hauv kev tsim khoom thiab tsim qauv.